There are two types of glow in the dark powder: solvent-based Luminous powder and water-based Luminous powder.

Solvent-based luminous powder is used in injection molding and solvent systems, and water-based luminous powder is used in water-based systems

Water-based luminous powder is made of luminous oil-based powder coated with organic orthoethyl silicate, deacidified and deesterified, and then calcined at high temperature to become a dense inorganic silica coating layer. Since the silica coating layer is non-polar, Therefore, it can be used in water and oily systems at the same time, and it also has a waterproof effect

Production and QC process:

Put the oil-based luminous powder into the reaction kettle and add organic orthosilicate ethyl ester, deacidify and degrease it into inorganic silica and coat it into water-based luminous powder, then calcinate at 500 ° C, then crush and classify, then take samples for waterproof testing (Extreme environment test): Put the luminous powder sample into warm water at 60-70°C for about 3 days to test the pH value. If the pH value becomes high, it means that the waterproofing is not done well, the coating is unqualified, and the coating layer is damaged. If there is no change in pH value, the batch is qualified for storage.

Normalmente, después de mezclarlo con la emulsión y dejarlo por mucho tiempo, cuando se vierte, tiene buena fluidez como la emulsión acrílica, lo que indica que el recubrimiento está intacto. Pero si el recubrimiento está dañado, puede ser difícil verterlo.

En la actualidad, tanto en el país como en el extranjero, la producción de polvo luminoso se produce principalmente mediante reactores de 50 kg, para controlar la calidad de los envíos. El reactor de revestimiento puede producir 50 kg de polvo luminoso a base de agua en cada lote, y se fabrican 200 kg de productos mezclando 4 recipientes de 50 kg de polvo luminoso a base de agua.

Conclusión : se puede ver que toda la prueba gira principalmente en torno al valor de pH. Valor de PH, 6-7, aclaramiento neutral.